参数资料
型号: LTC3208EUH#TRPBF
厂商: Linear Technology
文件页数: 5/24页
文件大小: 0K
描述: IC LED DRIVR QVGA DISPLAY 32-QFN
标准包装: 2,500
拓扑: 升压(升压),切换式电容器(充电泵)
输出数: 17
内部驱动器:
类型 - 主要: 背光
类型 - 次要: RGB,白色 LED
频率: 600kHz ~ 1.2MHz
电源电压: 2.9 V ~ 4.5 V
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘
供应商设备封装: 32-QFN
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
LTC3208
TYPICAL PERFOR A CE CHARACTERISTICS
1.5x Mode Charge Pump Open-Loop
LED Pin Dropout Voltage
vs LED Pin Current
1x Mode Switch Resistance vs
Temperature
Output Resistance vs Temperature
(1.5V BAT – V CPO )/I CPO
600
500
V BAT = 3.6V
T A = 25 ° C
0.45
0.40
I CPO = 200mA
V BAT = 3.3V
2.5
V BAT = 3V
V CPO = 4.2V
C2 = C3 = 2.2 μ F
2.3 C4 = 4.7 μ F
400
300
0.35
V BAT = 3.6V
V BAT = 3.9V
2.1
1.9
200
0.30
100
1.7
0
10
20
30
40 50
60 70 80
90 100
0.25
–40
–15
10 35
60
85
1.5
–40
–15
10 35
60
85
LED CURRENT (mA)
1.5x Mode CPO Voltage
vs Load Current
3208 G04
TEMPERATURE ( ° C)
3208 G05
2x Mode Charge Pump Open-
Loop Output Resistance vs
Temperature (2V BAT – V CPO )/I CPO
TEMPERATURE ( ° C)
2x Mode CPO Voltage
vs Load Current
3208 G06
4.8
2.8
V BAT = 3V
5.2
4.6
4.4
4.2
4.0
V BAT = 3V
3.2V
3.1V
3.4V
3.3V
3.5V
3.6V
V CPO = 4.8V
2.6 C2 = C3 = 2.2 μ F
C4 = 4.7 μ F
2.4
2.2
2.0
5.1
5.0
4.9
4.8
4.7
4.6
4.5
V BAT = 3V
V BAT = 3.1V
V BAT = 3.2V
V BAT = 3.3V
V BAT = 3.4V
V BAT = 3.5V
V BAT = 3.6V
C2 = C3 = 2.2 μ F
3.8 C2 = C3 = 2.2 μ F
C4 = 4.7 μ F
T A = 25 ° C
3.6
0 100 200 300 400
500
1.8
1.6
–40
–15
10 35
60
85
4.4
4.3 C4 = 4.7 μ F
T A = 25 ° C
4.2
0 100 200 300 400 500 600 700 800
LOAD CURRENT (mA)
Oscillator Frequency
vs Supply Voltage
3208 G07
TEMPERATURE ( ° C)
DV CC Shutdown Current
vs DV CC Voltage
3208 G08
LOAD CURRENT (mA)
V BAT Shutdown Current
vs V BAT Voltage
3208 G09
940
0.4
V BAT = 3.6V
8.5
D VCC = 3V
930
920
910
T A = 25 ° C
T A = –40 ° C
0.3
T A = 85 ° C
T A = –40 ° C
7.5
6.5
T A = 85 ° C
900
890
880
T A = 85 ° C
0.2
T A = 25 ° C
5.5
4.5
870
860
850
0.1
3.5
2.5
T A = 25 ° C
T A = –40 ° C
840
2.7
3.0
3.3 3.6 3.9
4.2
4.5
0
2.7
3.0
3.3 3.6 3.9
4.2
4.5
1.5
2.7
3.0
3.3 3.6 3.9
4.2
4.5
V BAT SUPPLY VOLTAGE (V)
3208 G10
DV CC VOLTAGE (V)
3208 G11
V BAT VOLTAGE (V)
3208 G12
3208fa
5
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